package com.zhou.common.mybatis.template.shiro;

import org.flowable.engine.*;
import org.flowable.engine.history.HistoricActivityInstance;
import org.flowable.engine.repository.Deployment;
import org.flowable.engine.repository.ProcessDefinition;
import org.flowable.engine.runtime.ProcessInstance;
import org.flowable.task.api.Task;

import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

public class HolidayRequest {

    public static void main(String[] args) {
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

        RepositoryService repositoryService = processEngine.getRepositoryService();

        ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
                .processDefinitionKey("holidayRequest")
                .singleResult();

        String diagramResourceName = processDefinition.getDiagramResourceName();
        InputStream imageStream = repositoryService.getResourceAsStream(
                processDefinition.getDeploymentId(), diagramResourceName);




        Deployment deployment = repositoryService.createDeployment()
                .addClasspathResource("holiday-request.bpmn20.xml")
                .deploy();

        /*ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
                .deploymentId(deployment.getId())
                .singleResult();*/
        System.out.println("Found process definition : " + processDefinition.getName());


        Scanner scanner= new Scanner(System.in);

        System.out.println("Who are you?");
        String employee = scanner.nextLine();

        System.out.println("How many holidays do you want to request?");
        Integer nrOfHolidays = Integer.valueOf(scanner.nextLine());

        System.out.println("Why do you need them?");
        String description = scanner.nextLine();


        RuntimeService runtimeService = processEngine.getRuntimeService();

        Map<String, Object> variables = new HashMap<String, Object>();
        variables.put("employee", employee);
        variables.put("nrOfHolidays", nrOfHolidays);
        variables.put("description", description);
        ProcessInstance processInstance =
                runtimeService.startProcessInstanceByKey("holidayRequest", variables);


        TaskService taskService = processEngine.getTaskService();
        List<Task> tasks = taskService.createTaskQuery().taskCandidateGroup("managers").list();
        System.out.println("You have " + tasks.size() + " tasks:");
        for (int i=0; i<tasks.size(); i++) {
            System.out.println((i+1) + ") " + tasks.get(i).getName());
        }

        System.out.println("Which task would you like to complete?");
        int taskIndex = Integer.valueOf(scanner.nextLine());
        Task task = tasks.get(taskIndex - 1);
        Map<String, Object> processVariables = taskService.getVariables(task.getId());
        System.out.println(processVariables.get("employee") + " wants " +
                processVariables.get("nrOfHolidays") + " of holidays. Do you approve this?");

        boolean approved = scanner.nextLine().toLowerCase().equals("y");
        variables = new HashMap<String, Object>();
        variables.put("approved", approved);
        taskService.complete(task.getId(), variables);

        HistoryService historyService = processEngine.getHistoryService();
        List<HistoricActivityInstance> activities =
                historyService.createHistoricActivityInstanceQuery()
                        .processInstanceId(processInstance.getId())
                        .finished()
                        .orderByHistoricActivityInstanceEndTime().asc()
                        .list();

        for (HistoricActivityInstance activity : activities) {
            System.out.println(activity.getActivityId() + " took "
                    + activity.getDurationInMillis() + " milliseconds");
        }
    }

}
